Brake-shoe.



H. K. SCHOENHEHEB,

BRAKE SHOE.

APPLICATIGN FILED AUG-26,1916.

w Patented May 1,191?.-

g Yr srarns un onion.

HERMAN K. SCHOENHEITER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE AMERI- CAN BRAKE SHOE AND FOUNDRY COMPANY, OF WILMINGTON, DELAWARE, A COR- ronnrron" or DELAWARE.

BRAKE-SHOE.

Patented May i, i917.

Application filed August 26, 1916. Serial No. 117,016.

To all whom t may concern:

Be it known that I, HERMAN K. SCHOEN- Hnrrnn, a citizen of the United States, residing at Baltimore, in the State of Maryland, have made a certain new and useful. Invention in BrakeShoes, of which the following is a specification.

This invention relates to brake shoes and particularly to that type thereof wherein one or more metallic inserts are embedded within the cast metal body portion of the shoe and worn away therewith.

rlhe object of the invention is to provide a shoe of the class described wherein inserts of various metals are so embedded in the shoe body on the casting thereof, that at all times during the wear of the shoe, all of the embedded metal inserts will at some portion thereof be in contact with the wheel tread when the brakes are applied.

A. further object of the invention is to provide an insert, preferably in the form of expanded metal, cast in the body of the shoe so that said inserts serve to hold the parts of the cast metal body portion of the shoe together should it become cracked or broken in service.

Other objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location and rela-- tive arrangement of parts, all as will be more fully hereinafter set forth, as shown by the accompanying drawing, and finally pointed out in the appended claims.

Referring to the appended drawing Figure 1 is a view in side elevation partly broken and sectioned of a brake shoe emv bodying my invention, section being taken on the line 1 1, of Fig. 2.

Fig. 2 is a bottom plan view of the structure shown in Fig. l partly in section taken on the line 2 2, and looking in the direction of the arrows.

Fig. 8 is a view in section taken en the line 3 3, Fig. 2, and looking in the direction of the arrows.

Fig. 4 is a fragmentary sectional view of a modified form.

The same part is designated by the same reference numeral wherever it occurs throughout the several views.

In accordance with my invention, I provide a plurality of members, preferably of expanded metal, and constructed 1n longitudinal strips, of curved or wave form as indicated at 4. These strips extend in longitudinal length of the shoe at substantially the horizontal width thereof being positioned substantially fiatwise across the face of the shoe. Any number of such strips may be employed according to the size of the shoe, but for illustrative purposes I show a shoe in the drawing in which three strips are employed. The strips being arranged vertically one above the other with the wave portion of lowest depression of the upper one resting upon the wave portion of highest depression o-f the one immediately below it as shown best in Fig. l. rIhis in effect forms a vertical series of horizontally extending members of expanded metal.

I prefer to employ foraminous strips 4 with openings extending throughout the vertical height of the shoe, and in the respective openings I insert members indicated at 5 of any suitable shape or material preferably of the same shape as the openings of the strips 4 may be as desired, I have shown the same however to be diamond shaped, and the inserts 5 being of the same shape. I wish it to be understood however, that my invention in its broad scope is not to be limited or restricted to these details.

In Fig. 4 I show a modified structure wherein I wave the horizontal strips 4 vertically and embed them in the shoe 6 symmetrically that is, with the highest wave portion of one strip directly over the highest wave portion of the one below it. It will be seen that by this arrangement I also secure the Objects of my invention as when one strip is worn ofi' the next strip above it appears on the tread surface.

The advantages derived by employing a brake shoe with a tread surface containing different metals, has long been recognized, but heretofore no shoe has been designed that at all times during the wear of the shoe presents all of the metals forming part of the same, against the wheel tread. In the drawing it is obvious that any longitudinal section taken on the shoe body that at a great number of places in the face thereof, and across the face thereof, all of the embedded metals will be on the surface of the shoe throughout the life thereof, and more places of exposure may be readily secured by increasing the number of inserts 5 or waves in members 4.

It will be further seen that I have provided a shoe of the foregoing character which may be readily and cheaply manufactured, and one in which the entire shoe will be held together by the members l, and thus be capable of continued use should it become cracked or broken.

Having now set forth the objects and nature of my invention, and a structure embodying the principles thereof, what I claim as new and useful and desire to secure by Letters Patent is l. A brake shoe comprising a body portion of cast metal having embedded therein two or more different members of different metal from said shoe body and from each other, and so arranged throughout the vertical heightof the shoe that at all times during the life of said shoe some portion of all of said members and said shoe body forms the tread surface.

2. A brake shoe comprising a body portion of cast metal having embedded therein two or more different members of different castings so arranged throughout the vertical height of the shoe that. at all times during the life of said shoe, said body metal, and a portion of all of said members form the tread surface of said shoe.

3. A brake shoe having a plurality of independent differently shaped members embedded in the casting of the body portion thereof, and so arranged throughout the vertical height of the shoe that a portion of said members and of the shoe body metal areat all times during the wear of said shoe on the bearing surface thereof.

il. A brake shoe comprising a body portion having a plurality of wave shaped strips arranged one above the other and in contact with each other, and embedded in said shoe to extend the substantial longitudinal length thereof. l

5. A brakeshoe comprising a body portion having a wave shaped strip embedded l therein to extend the substantial longitudinal length thereof and an insert of cast metal also embedded in said shoe body and arranged to extend the vertical height of said shoe.

6. A brake shoe comprising a body portion having a plurality of wave shaped strips arranged one above the other, and embedded therein to extend the substantial longitudinallength thereof and inserts of cast metal also embedded in said shoe body extending through said strips, and arranged to extend the vertical height of said shoe.

7. A brake shoe comprising a body portion having foraminous wave shaped strips extending the longitudinal and horizontal length and width, respectively, of said shoe, and inserts extending the vertical height of said shoe and extending through said foraminous strips.

8. A brake shoe comprising a-body portion having a plurality of foraminous wave shaped strips extending the longitudinal and horizontal length and width of said shoe, and arranged in contact with each other in vertical layers, and inserts extending the vertical height of said shoe and through said plurality of strips.

In testimony whereof I have hereunto set my hand in the presence of a subscribing witness, on this 31st day of July A. D., 1916.

HERMAN K. SCHOENIIEITER.

Witness F. W. GRANT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

